Adjustable warp stop motion for looms



Jan. 14, 1969 s. .1. SOTEK ADJUSTABLE WARP STOP MOTION FOR LOOMS ofS Sheet Filed Jan. 16, 1967 K m M0 5 J Y 5 F m T S ATTORNEY Jan. 14, 1969 s..:. SOTEK 3,

ADJUSTABLE WARP STOP MOTION FOR LOOMS Filed Jan. 16. 1967 I Sheet 2 of 5 INVENTOR. STANLEY J. SOTEK ATTORNEY am QM Y Jan. '14, 1969 s. 1. soTEK 3,421,552

ADJUSTABLE WARP STOP MOTION FOR LOOMS Filed Jan. 16, 1967 Sheet 3 r of 5 J l 5121: umllm 11.. g 1 9 Q. 4

INVBNTOR. STANLEYJ. SO'TEK 36 13am Q ATTORNEY United States Patent Claims ABSTRACT OF THE DISCLOSURE A mounting support having calibrations for determining settings in vertical, horizontal and angular planes and an inverted U-shaped front warp support for simplified application and removal.

Background of the invention (1) Supporting and positioning means within a loom for mechanical and electrical type warp stop motions and a readily removable warp supporting member.

(2) The weaving of a varied range of cloth constructions necessitates position changes for the warp stop motion. The desired positions may vary horizontally and vertically relative to the hardness frames as well as angularly to the horizontal. Numerous means have been used for locating the supporting brackets for such mechanisms. These have been difiicult to set because of the weight and length of the supported parts and further because settings had to be determined by a trial and error procedure. The process had to be repeated for each loom requiring position changes in the warp stop motion. Standardization of settings was not easily accomplished and cloth woven upon a group of looms tended to vary with the differences in settings. US. Patents No. 2,479,546 and 2,858,857 disclose typical adjusting supports for warp stop motions having the disadvantages above mentioned.

In warp stop mechanisms of the prior art, as in the patents above cited, the warp support shaft has been difficult to remove and re-apply. This operation is generally performed at each warp change and, where bolts, nuts, and washers were used, the downtime was further increased.

Summary It is a general object of the invention to provide adjustable supports for warp stop motions whereby settings which will be the optimum for each weaving condition may be easily made.

It is a further object of the invention to provide supporting members having built-in graduations for making predetermined adjustments in vertical, horizontal and angular planes.

It is a further object of the invention to provide a front warp support member with simple clamping means allowing easy application and removal.

The instant invention provides supporting and adjusting means for warp stop motion by which a group of looms may be set to a desired standard quickly and accurately.

Brief description. of the drawings The invention will be described by reference to a specific embodiment thereof as illustrated in the accompanying figures of drawing, wherein:

FIG. 1 is a view in perspective of the adjustable supporting brackets for the left-hand end of a warp stop motion as seen from the side and slightly to the rear;

FIG. 2 is a view of the mechanism of FIG. 1 as viewed from the front;

3,421,552 Patented Jan. 14, 1969 "ice FIG. 3 is a sectional view of the pivotal point of the stop motion shelf;

FIG. 4 is a left hand elevation of the support bracket showing the horizontal and angular scales;

FIG. 5 is an elevation similar to FIG. 4 showing the vertically movable bracket and scale; and

FIG. 6 is a cross section of the front warp support showing the novel clamping means.

Description of the preferred embodiment Now referring to the drawings, in FIGS. 1 and 2 a single loornside 20 is shown with a warp stop motion, generally designated 21, supported thereon. It will be understood that the stop motion 21 extends across the full width of the loom to a second loomside (not shown) and that a set of adjustable supporting parts, similar to those to be explained, are present on the right-hand side. The warp stop motions applicable to the instant invention may be either electrically or mechanically operated for equally beneficial results.

Detector bars 22 are held in spaced alignment by an end cap member 23 which is supported above a slidable bracket 24 by posts 25 and 26. The slidable bracket 24 is adapted to hold a series of center rods 27 and a rear warp support 28 in any known manner and to have a front warp support 29 fastened thereto in a manner to be explained below.

The slidable bracket '24 is adjustably fastened to a stop motion shelf 30 by a bolt 31 extending through an adjusting slot 32. The shelf 30 has an upwardly directed surface 33 on which the bracket 24 may be moved in a generally horizontal plane to positions toward and away from the loom harness (not shown). The surface 33 is scored in some manner to form a numerical scale 34 and the bracket 24 has an indexing point 35 directed toward the scale 34 and movable therealong.

A shoulder member 36 (FIG. 2) is secured to the loomside 20 with a step 37 resting upon the loomside upper surface 38 for stability. A vertical scale 39 fastened to the shoulder member .36 by a screw 40 is for determining the relative vertical position of the movable parts. A shelf supporting bracket 41 is fastened to the shoulder member 36 by a bolt 42 extending through vertical slots 43 and -44 which allow settings of variable heights (FIGS. 4 and 5). The bracket 41 extends angularly to form a bifurcated arm 45 having a generally horizontal surface 46 disposed adjacent the edges of the scale 39 as shown in FIGS. 1 and 5 for indicating relative heights of the movable bracket 41. A jack screw 47 is threaded downwardly through the arm 45 and bears upon the shoulder member 36. By turning the screw 47, variable adjustments may be made to raise and lower the bracket 41 to conform to desired readings on the scale 39.

The stop motion shelf 30 is pivotally fastened to the bracket 41 by a bolt 48. A conic boss 49 on the vertical surface of the bracket 41 is received by a mating recess 50 in the shelf 30' (FIG. 3). The boss and recess allow pivotal motion and support of the shelf 30 without loss of position. The bracket 41 has a rearwardly extending portions 51 containing a bolt hole 52 and an indicating finger 53 directed toward the rear of tthe m (FIGS. 4 and 5).

An adjusting arm 54 which extends downwardly from the shelf 30 contains an arcuate slot 55 in an indexing relationship with the bolt hole 52 (FIG. 4). A locking bolt 56 extending through the hole 52 and the slot 55 will hold the shelf 30 in any angular position when the bolt is tightened. The shelf 30 has, near its rearward end, a depending protractor scale 57 movable in an are adjacent the finger 53 which will indicate the angularity of the shelf 30.

The front warp support 29 (FIGS. 2 and 6) is formed in an inverted U shape and extends the full length of the warp stop motion 21. The warp support 29 is fastened to the slidable bracket 24 by an internal clamping member 58 which is inserted into the support 29 with pressure being applied by a screw 59 threaded into the bracket 24. A washer combination 60 (FIG. 6-) locks the support 29 into place and allows removal by simply loosening thescrew 59. This facilitates the application and removal of the warp support as bolts and nuts do not need to be taken off and the support itself does not require holes or slots for fastening purposes.

The adjustable brackets of the instant invention allow movement of the warp stop motion horizontally, vertically and also angularly to the warp line. The three graduated scales 34, 39 and 57 permit quick and accurate settings to predetermined points within the range of movement. When a combination of settings is determined as the optimum for any particular cloth construction, that combination may easily be applied to any number of looms by use of the graduated scales.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a warp stop motion of the type having spaced detector bars and spaced warp supporting rods, an adjustable positioning means which comprises (a) supporting members for fixedly adjusting said stop motion vertically, horizontally and angularly, said supporting members including (1) a pivotally movable stop motion shelf,

(2) said shelf having a fiat upper surface adjustable angularly and vertically,

(3) a slide bracket adjustably supported upon said upper surface, said supporting rods being removably attached to said slide bracket; and

(b) graduated indicating means for positioning said supporting members along vertical, horizontal and angular planes according to any predetermined arrangement.

2. The adjustable positioning means according to claim 1 which further includes a vertically slidable shelf supporting bracket.

3. The adjustable positioning means according to claim 2 which further includes a vertically disposed jack screw for providing variable adjustment to said shelf supporting bracket.

4. The adjustable positioning means according to claim 3 wherein said graduated indicating means includes a height indicating surface upon said shelf supporting bracket movable vertically relative to a fixed graduated vertical scale.

5. The adjustable positioning means according to claim 2 wherein said stop motion shelf is pivotally supported by said supporting bracket and vertically movable therewith.

6. The adjustable positioning means according to claim 5 wherein said graduated indicating means includes a depending calibrated protractor scale upon said stop motion shelf, and said shelf supporting bracket includes an indicating finger directed toward said protractor scale.

7. The adjustable positioning means according to claim 6 wherein said graduated indicating means includes a longitudinally extending scale upon said stop motion shelf, and said slide bracket carries an indexing point directed toward said longitudinally extending scale.

8. The adjustable positioning means according to claim 1 wherein at least one of said warp supporting rods defines an inverted U-shaped cross section, and internal clamping means disposed upwardly into said U-shaped cross section for fastening said warp supporting rod removably to said slide bracket.

9. The adjustable positioning means as defined in claim 7 wherein at least one of said warp supporting rods defines an inverted U-shaped cross section, and internal clamping means disposed upwardly into saio U-shaped cross section for fastening said warp supporting rod removably to said slide bracket.

10. The adjustable positioning means as defined in claim 2 wherein said shelf supporting bracket includes a conic boss, said stop motion shelf having a mating recess for receiving said boss for pivotal movement thereon.

References Cited UNITED STATES PATENTS 1,580,084 4/1926 Brown 139-369 2,220,011 10/1940 Brown 139-369 2,479,546 8/ 1949 Thatcher et al. 139358 2,858,857 11/1958 Picanol 139369 FOREIGN PATENTS 674,901 10/1929 France. 856,005 12/1960 Great Britain.

45,308 12/1961 Poland.

MERVIN STEIN, Primary Examiner.

JAMES KEE CHI, Assistant Examiner.

US. Cl. X.R. 139358 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,421,552 January 14, 1969 Stanley J. Sotek It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:

In the heading to the printed specification, line 5, "The California should read The Carolina Signed and sealed this 7th day of April 1970.

(SEAL) Attest:

WILLIAM E. SCHUYLER, JR.

Edward M. Fletcher, Jr.

Commissioner of Patents Attesting Officer 

